40459 ÷ 6 = 6743 R1
Alright, let's work through the division of 40459 by 6 step by step.

Step 1:
6 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 4 to get 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 6

Step 2:
6 goes into 40 6 times with a remainder of 4.
Write down 6 as next digit of of the result. 
Result so far: 6
Subtract 36 from 40 to get 4.
Bring next digit (4) of the dividend behind the 4 and repeat the process: 44 / 6

Step 3:
6 goes into 44 7 times with a remainder of 2.
Write down 7 as next digit of of the result. 
Result so far: 67
Subtract 42 from 44 to get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 6

Step 4:
6 goes into 25 4 times with a remainder of 1.
Write down 4 as next digit of of the result. 
Result so far: 674
Subtract 24 from 25 to get 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 6

Step 5:
6 goes into 19 3 times with a remainder of 1.
Write down 3 as next digit of of the result. 
Result so far: 6743
Subtract 18 from 19 to get 1.

The final result is 6743 with a remainder of 1.